Drawer-fitting machine



(No Model.) 2 SheetsSheet '1.

L. 0. ORON.

DRAWER FITTING MACHINE.

No. 339,270. Patented Apr. 6, 1886.

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' (No Model.) 2 SheetsSheet 2. L. 0. GRON.

DRAWER FITTING MACHINE.

' No. 339,270. Patented Apr. 6, 1886.

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NITED STATES PATENT OFFICE.

LUOIUS C. ORON, OF PIQUA, OHIO.

DRAWER-FITTING MACHINE.

SPECIPIGATION forming part of Letters Patent No. 339,270, dated April 6, 1886.

Application filed November 6, 1884. Serial No. 147,311. (No model.)

' To all whom it may concern.-

Be it known that I, LUOIUS C. CRON, a citizen of the United States, residing at Piqua, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in \Vood Dressing and Fitting Machines, of which is the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that class of machines in which the wood is dressed by passing it between disks having agrinding or smoothing surface; and it consists in the improve ments hereinafter described and claimed.

In the accompanying drawings, Figure l is a front elevation of my improved wood-dressing machine, partly in section. Fig. 2 is an end elevation of the same. Fig. 3 is a vertical sectional view through the line 1 1 of Fig. 1. Fig. 4 is a cross-section of the disk, taken through the line 00 0c of Fig. 3. Fig. 5 is a crosssection of the central portion of the disk, taken through the line yy of Fig. 31 Fig. 6 is a detail view of one of the clamps for holding the sand-paper on the disk.

The same letters of reference are used to indicate identical parts in all the figures.

A is a supporting-frame, of any convenient construction, upon which is journalcd a shaft, B.

B B represent a simple and convenient form ofjournal-boxes. On one end of the shaft B is attached the drivepulley O.

C is a loose pulley, to which the belt is shifted when the machine isnot running.

On the shaft B are keyed two or more disks, D D, which revolve with the shaft B. One of the disks-4n this instance Dis not attached fixedly to the shaft B, but moves laterally along it toward or from the other disk, D, the shaft being provided with a longitudinal groove, in which the disk is keyed, so that it always revolves with the shaft, but is free to move laterally.

d d are strengthening-ribs on the disks. The adjustable disk D is provided with an elongated hub, E, Figs. 4 and 5, on the end of which is a small disk or circular plate, F, ex actly parallel with the face of the disk and a little larger than the hub E. Encireling this hub E, and held in place by the disk or plate F, is a carrier, G, which extends across the frame A, resting upon the sides A and arranged to slide 011 said frame. The ends of this carrier G are provided with brackets or arms 9, with an internal threaded opening, through which pass shaft-s or rods H H at both front and rear of the machine. These shafts are parallel with the shaft B, and are screwthreaded, and at one end are provided with beveled gears K K. At the end of the frame is a cross-shaft, L, with two beveled gears, M M, to correspond with the gears K K. The cross-shaft L is revolved by the handwheel O, which, through the beveled gears M and K, revolves the shafts H H, and these, by means of the screw-threads, move the carrier G laterally along the sides of the frame A, which carries with. it the disk D. By simply revolving the wheel or lever O in one direction the disk D is moved toward the disk D, and by revolving it in the other direction the disk D is moved away from the disk D, the carrier holding it always parallel to the disk D.

P P are movable guides or rests, which extend across the frame and rest on the sides A.

They are used to support the stuff being fed to the machine. The grinding-disks being adjusted to the proper width and revolved by the pulley O, the material to be dressed is placed on the guides P l? and pushed between the disks, when it is dressed even and true and to the exact size desired.

My improved machine is especially adapted for such cabinet-work as bureau and table drawers, and the like, whose ends are always more or less uneven and untrue. The disks having a wide surface and being exactly parallel, make the ends perfectly even, true, and plumb.

By means of the lever or crank wheel Othe disks may be moved apart or closer together while in operation, or they may be fixed in their distance apart so that each piece dressed will come out exactly the same'size. As the pieces are not of uniform size before being dressed,the larger ones would not feed between the disks without enlarging the space. To avoid this I make the disks beveled on their face toward their periphery, as shown at d d in Fig. 4. This bevel may extend back as far as desired-in proportion to the size of the disks or the work to be done. By this means the space between the outer faces or edges of the disks where the material is first fed in is greater than that between their centers, and pieces of slightly-different sizes may be fed in without changing the relative position of the disks.

In order to supply a grindingsurfaee to the disks I usually use sand-paper cut into a circular sheet a littlelarger than the disk. The disk is provided with radial grooves I I, and one or more circular grooves, J, preferably semicircular in cross-section, as shown at J, Fig. 5. In these grooves fit semicircular strips or clamps, Fig. 6, held in place by screws. The sheet of sandpaper being laid on the disk, the clamps are pressed into the grooves,inclosing a part of the paper. They are then screwed down tight, and are made small enough to fit into the grooves, so that their outer surface is below the surface ofthe disk. The screw-heads are of course sunken in the clamps. The edges of the sheet of sand-paper are then pressed over the edge or periphery of the disk and clamped down by a rim or tire.

It is usual in sandpapering-machines to place a cushion or backing between the disk and sand-paper of felt or rubber to make the pol ishing surface somewhat yielding. This is necessary when they are used merely for polishing; but my machine is designed to grind the surfaees down even and plumb. I prefer, therefore, for that purpose an unyielding grindingsurface, and the sand-paper is applied directly to the disk without any intermediate cushion. When the disks are set, each piece ground between them comes out dressed exactly to the same size and perfectly square and plumb.

The disk D may be braced in position relative to the shaft B by the following arrangement: A circular plate, S, is bolted on the end free of the hub E, so as to extend peripherally above the reduced portion of said hub. The ring F is interposed between said peripherallyprojecting portion and the end face of the carrier G. Around the plate S,near its edges, are screw-threaded openings, which receive setscrews, whose inner ends are fiat and abut against the plate Fon the hub E. If the disk D gets out of plumb from uneven wear or other cause,by tightening the set-screws s it is braced up in exact plumb with the plate S, and at exact right angles to the shaft B, and hence exactly parallel with the other disk,D.

I In operation this class of machines develop a quantity of fine dust, which if left free becomes very annoying and injurious in the shop. I therefore inclose the frame A in an envelope or jacket, '1, and cover the machine with a close hood or cap, U, hinged to the frame, as at a, so that it may be lifted up, leaving open merely a door in front, as seen at Z, through which the material is fed between the disks. At the bottom of the chamber thus formed is an opening,W. By attaching an ordinary exhaust-fan to this opening a draft is produced through the machine from the door Z to the exit-opening IV, and all the dust carried off, thus keeping it out of the shop, and also keeping the machine constantly clean and free.

I am aware that sand-paper disks have been used for polishing and dressing wood, and do not broadly claim their application to that use; but,

Having thus fully described my invention,I claim-- 1. In a wood-dressing machine, the combination of shaft B, disks D D, and carrier G, shafts H H, and means,-substantially such as described, for revolving said shafts H H, whereby the carrier may be moved to move the disk D up on the shaft B to or from the disk D, substantially as set forth.

2. In a wood-dressing machine, the combi-- nation, with shaft B and disk D, mounted thereon and provided with a flanged hub, of carrier G, plate S, and set-screws s, substantially as set forth.

3. In a drawer-fitting machine, the combination,with a shaft, B,and two disks mounted thereon, to present vertical parallel faces, of a hood or jacket having exhaust-openings, and an opening in one side,whereby the drawer is passed to be acted on by said vertical disk- LUCIUS O. ORON.

Witnesses:

CHARLES F. CLARKSON, GEORGE E. KoEs'rEn.

ICO 

